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[Oxidation]?GIPGPVGAAGATGAR

Sequence: GIPGPVGAAGATGAR (15 residues)
Modifications: 1× Oxidation (P) Unimod:35
Monoisotopic mass: 1266.66805 Da
Calculated ions: [M+H]+ 1267.6753 · [M+Na]+ 1289.6573 · [M+K]+ 1305.6312 · [M+2H]2+ 634.3413

Position in protein

Collagen alpha-2(I) chain residues 328–342 of 1366

Protein	Measured m/z	Calc. m/z	ppm	Species · tissue	Source	Status
Collagen alpha-2(I) chain UniProt P08123	1267.6700	1267.6753	-4.2	Homo sapiens (human) · Pancreas · Pancreatic tumour	10.1007/s00216-010-3554-6	Approved Reported theoretical m/z differs from the calculated value